Wherein the sub. was grievously mistaken, for Otto Oberfurst's activities as a spy within Britannia's gates were by no means at an end.
CHAPTER XXII
THE SHELL-BATTERED HOSPITAL
On returning to Esbjerg, Tressidar and Fuller bade Lieutenant Holloway good-bye and hurried off to the British Consul's office. Acting with the greatest dispatch, that official, having taken down the officers' sworn statements, communicated by telegraph with the British Ambassador at Copenhagen. He, in turn, acquainted the Danish Government with the attempt to destroy the "Nordby" by internal explosion and requested that Otto Oberfurst be arrested.
Already the Danes were too late. The spy, having landed with the skipper of the mined ship, contrived to slip away, and for the present all traces of him were lost.
That same evening Tressidar and his chum sailed for England in a Danish mail-boat, arriving at Grimsby without incident.
Here they separated, Fuller proceeding to the Naval Air Station at Great Yarmouth, while Tressidar made for York in order to catch the Scottish express.
Rumours of naval activity in the North Sea urged him northwards with the least possible delay, but it was not until eight on the following morning that the slow "local" crawled into Auldhaig station.
"You've been remarkably quick, Mr. Tressidar," was the senior officer's greeting, when the sub. reported himself for duty. "It was only an hour ago that we received official news of your escape from Sylt."